My family and I stayed at the Tang Cheng Hotel for 2 nights near the end of June 2007. We booked out three rooms as part of a package tour of China.
The Tang Cheng hotel is a very nice tourist hotel that only has one key drawback, which is the fact that it is not located near the historic city walls (and city center). It is located in one of the outlying neighborhoods of Xi'an. The area is fairly busy and bustling, especially during the day (with some street food vendors in a nearby alleyway and a couple of interesting food markets a couple blocks away), but it is not a very "touristy" area at all.
The hotel itself has a very large, almost cavernous, lobby area with a lobby bar, 2 restaurants (one upstairs and one downstairs), and a small shopping arcade and business center off to one side. There is also a pretty garden in the back of the hotel that guests can walk through.
The front desk staff were very friendly and handled our check-in/check-out quickly and efficiently. The rooms themselves were all nice and clean, with terrycloth robes and slippers already arranged for our use. The beds themselves are typical of many Chinese hotel beds (VERY firm mattresses), but otherwise comfortable.
Of the two restaurants, one is a 24-hour Western restaurant and the other is a Chinese restaurant. Our tour included buffet breakfast at the Western restaurant, though we only had breakfast there for 1 morning. The 2nd morning we asked to be switched to the Chinese restaurant. The buffet at the Western restaurant has about a 70/30 mix of Western/Chinese food with a lot of typical breakfast items such as scrambled eggs, french toast, fruit, etc. The Chinese items primarily consist of fried rice, noodles, and rice congee. There is also an omelet bar. The food at the Western restaurant is average at best. This is why we switched to the Chinese restaurant for our 2nd breakfast. The buffet there has significantly more interesting food items including a variety of steamed buns and dumplings (though there is still an omelet bar for the less adventurous). In my opinion, the Chinese breakfast is MUCH better than the Western one. (Who's wants bad scrambled eggs when they can get tasty pork buns? I can get scrambled eggs anywhere in the U.S., but not the buns.)
Note: If your tour package at the hotel includes the Western breakfast and you want to switch to the Chinese one, the main thing to keep in mind is that the Chinese breakfast is CHEAPER than the Western one. As such, the hotel will initially be very unwilling to switch you over because they think you'll ask for the money difference back. We just told them that we didn't care about the money difference, and once they got that assurance from us, they were more than happy to switch us.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC